hanson



(No Model.)

F. B. HANSON.

PUMP.

No. 254,129. y Patented Feb. 28,1882.

N4 PETERS. Pbuwmhugnpher. wnunngmn. D. a

, *UNITED STATES? PATENT OFFICE..

PUMP.

SPECIFICATION forming part of Letters Patent No. 254,129, dated February2B, 1882.

` Application filed June 2, 1881. (No model.)

`useful Improvements in Pumps, of which the following is a specication.

Although certain features of the invention are applicable to hand-pumpsgenerally,the

invention is particularly intended for combined lift and force pumps;and its object is to provide a simple and compact pump, the parts ofwhich are so connected that they may be easily pnttogether, and are soarranged that they are readily accessible for examination and reairs.

The invention con sistsin the combination, in apump, of an uprightcylinder and a piston, a chamber above the cylinder containing mechanismfor imparting motion to the piston, suction and discharge chestscontaining suction and discharge valves arranged immediately above saidchamber, and passages leadin g from said valve-chests to said cylinderabove and belowlthe piston. This arrangement renders the valves readilyaccessible for examination or repair, and the discharge-chest with whichthe discharge-pipe communicates may be constructed to serve as anair-chamber. o

, 'The invention also consists in the combination, in a pump, of apiston, an arm or lever and allink for operating said piston, arock-shaft,`

and a novel means of locking said lever or arm upon said rock-shaft,whereby I provide for placing the lever or arm within the casing or bodyof the pump,and then inserting the rockshaft through the side of thepump .and said lever or arm, after which said lever or arm may beconveniently locked to the shaft.

The invention also consists in the combination, with said piston, leveror arm, link, and rock-shaft, of stops upon the interior ot' the pumpeasing or body, and projections upon said lever or arm which engage withsaid stops and properly limit the movement of said leveror arm and thestroke ot the piston.

In the accompanying drawings, Figure 1 represents a central verticalsection of a'pump embodying my invention. Fig. 2 represents a similarsection upon the dottted line .r @0,Fi g. l; and Fig. 3 represents ahorizontal section upon the irregular dotted line y y, Fig. 1.

Similar letters of reference designate corresponding parts in all thefigures. `A designates the barrel or cylinder ot' the pump, whichissecured in an upright position upon a piston, B. Thispiston is hererepresented as composed of a hollow casting, the lower part ot' which isof reduced diameter and has fitted upon it two cup-leather p'ackings, aa, which are secured by a nut, b, and prevent the leakage of liquid pastthe piston in either direction. The pistonB might, however,be otherwiseconstructed and provided with any suitable pack- The barrel or cylinderA is surmounted by a chamber, C, which contains the devices forimparting motion to the piston,hereinafter described, and above theVsaid chamber are arranged a suction-chest, D, and a dischargechest, E.The barrel or cylinderA, the chamber C, and thetwo chestsD and E are allrepresented as constructed withy danges through which bolts may beinserted for securing the several parts together, and'packing or gasketsof rubber or other packing material may be placed between the tlan gesto make tight joints.

Upon the side ofthe chamber C is a nozzle, o, (shown in Fig. 2,) towhich the suction-pipe may be connected, and the liquid passestherefromthrough a passage, d, to the suction-chest I). The entrance of liquidfrom the suctionchest D is controlled by valves f, which may be hinged,as here shown, or of any other suitable character, and from thesuction-chest the liquid passes through a passage, y, to the cylinder Aupon the under side of the piston B, and through a passage, g', to thechamber C,

a base-piece, A', and has litted within itand thence to the cylinderupon the upper side IOO is connected with one end of G, which is fixedupon a rock-shaft, H, (best shown in Fig.3,) and which may be oscillatedby meansof a handle or lever, H', outside the pump.

The eye or hub G of the lever or arm G, through which the roek-shaftH isinserted, fits within a narrow extension, C', of the chamber C, and isthereby prevented from lateral movement.

The portion of the rock-shaft H upon which the eye or hub G of the leveror arm G is secured is of reduced diameter, and uponeach' side oi' saideye or hub are shoulders j j', of square or polygonal form, which tit incorresponding seats in opposite sides of the eye or hub. The shoulderjis formed upon the rockshal't itself; but the shoulder j is formed byone end ot' a sleeve, I, fitting upon the portion of the rock-shaftwhichis of reduced diameter, andthe said sleeve may be forced inward to clampthe eye or hub G tightly by means of a cap-nut, k, screwed upon the endof the rock` shaft. In this way the lever or arm Gislocked so as to turnwith the rock-shaft. The rockshafttts in bearings I, formed in hubs orbosses projectingfrom the sides of' the pump,and oneof which-is closedby a screw-plug, m, to prevent leakage, while the other is constructedwith a stuffing-box, a, for the same purpose.

In securing -the lever or arm G upon the rock-shaft H the former isplaced in position within the pump and the shaft. The sleeve I, beingremoved, is inserted from the outside through its bearings l and the eyeor hub G. The sleeve I is then secured in place by the nnt 7c, t-huslocking the lever or arm securely to the rock-shaft, and still alordin gprovision for its ready detachment therefrom, if necessary.

Upon the interior of the chamber C are shoulders o, and the hub or eye Gof the lever or arm G has projeetionsp, which engage with saidshoulders, and thus form stops lfor limiting the oscillation of thelever or arm andtic ing the stroke of the piston.

By my invention I provide a pump of simple construction and compactform, andthe several parts of which are readily accessible, it

necessary, for examination and repairs.

What I claim as my invention, and desire tosecure by Letters Patent, is-

1. In a pump, the combination of anlnprightcylinderandapiston,achamberabovethe a lever or arm,

cylinder containing mechanism for imparting motion to said piston,suction and discharge chests containing suction and discharge valvesarranged im mediately above said chamber, and passages leading from saidchests to said cylinder above and below the piston, substantially asspecied.

2. The combination ot the cylinder A and piston B, the chamber G,arranged above and supported by said cylinder, mechanism for operatingthe piston, contained in said chamber, the suction and discharge chestsB and E, containing valves j' h, the passages g g', and. the partitiong2, separating said passages, all substantially as specified.

3. The combination ot' the cylinder A and piston B, the chamber U,arrangedabove and supported by said cylinder, mechanism for operatingsaid piston, arranged in'said cham-v ber, the suction and dischargechests D. and E, containing valves f h, the passages g g', and theinwardly-projecting nozzle-z' in the chest E, whereby the latter is madeto'serve as an air-chamber, substantially as specified.

4. Ina pump, the combinationvot` a cylinder and piston, a lever or armanda link for opi operating said piston, and a rock-shaft insertedthrough saidlever or arm, and comprising: square or polygonalshoulders,between.` which said lever or arm is held, and which eu-y tercorresponding seats in opposite sides thereof, one of said shouldersbeing formed-by a sleeve fitting upon said shaft, substantially y asspecified.Y

5. Theconibination' of thexlever or arm G, I Y

the rock-shaft H, having a shoulder, j, the sleevel, forming theshoulder j', and the nut 7c for securing said sleeve'l upontheroekshaft, substantially as specified.v

' 6. Ina pump, the combination of acylindcr.v and=piston,fa linlr'and alever or-arm forim parting vmotion to saidpiston, a rock-shaft to e 95winch said lever or arm 1s secured, stops upon'v theinterior of the'punip, and projections upon said lever or f arm, which` are'adaptedto en'-Agage-with said .stops for-limiting the movement of said =lcver or-arm,substantiallyl asA specified.

FRANK B; HANSON.- Witnesses:

T. J. KEANE, CHANDLER HALL.

IOO

